Short but sweet – another display idea I’d seen on Pinterest, and have created my own version of.
Pdf file is here: 100_challenge
Excel sheet for checking totals for you is here: 100_challenge_checker (Thanks to @LWmathsmatters for the idea!)
I trimmed the edges, stuck together 6 pieces of card (two columns of 3 landscape) to make a square-ish base, and stuck it on. I’ll probably add decorative tape to make it prettier, but I’ve temporarily run out….